# Council Decision of 23 September 2013 on the security rules for protecting EU classified information (2013/488/EU), Division 15: Follow-up assessment visits shall be conducted as necessary, in particular if:

Extent: E+W+S+N.I.

(a) there is a need for the releasable level of EUCI to be raised;
(b) the Union has been notified of fundamental changes in the third State or international organisation’s security arrangements that might have an impact on how it protects EUCI; or
(c) there has been a serious incident involving unauthorised disclosure of EUCI.

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Source: https://www.legislation.gov.uk/eudn/2013/488/annex/VI/division/III/division/15 (the official version)
Page: https://openlegislation.uk/eu-decision-2013-488/annex-VI/division-III/division-15
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.